diff options
Diffstat (limited to 'lib/hipe/cerl/erl_types.erl')
| -rw-r--r-- | lib/hipe/cerl/erl_types.erl | 1018 |
1 files changed, 445 insertions, 573 deletions
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl index 4b2bec5fa8..14335cf635 100644 --- a/lib/hipe/cerl/erl_types.erl +++ b/lib/hipe/cerl/erl_types.erl @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2003-2014. All Rights Reserved. +%% Copyright Ericsson AB 2003-2015. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -40,7 +40,6 @@ any_none_or_unit/1, lookup_record/3, max/2, - module_builtin_opaques/1, min/2, number_max/1, number_max/2, number_min/1, number_min/2, @@ -68,7 +67,6 @@ t_cons/2, t_cons_hd/1, t_cons_hd/2, t_cons_tl/1, t_cons_tl/2, - t_constant/0, t_contains_opaque/1, t_contains_opaque/2, t_decorate_with_opaque/3, t_elements/1, @@ -79,10 +77,11 @@ t_non_neg_fixnum/0, t_pos_fixnum/0, t_float/0, + t_var_names/1, t_form_to_string/1, - t_from_form/1, - t_from_form/2, - t_from_form/3, + t_from_form/4, + t_from_form/5, + t_from_form_without_remote/2, t_from_range/2, t_from_range_unsafe/2, t_from_term/1, @@ -118,7 +117,6 @@ %% t_is_byte/1, %% t_is_char/1, t_is_cons/1, t_is_cons/2, - t_is_constant/1, t_is_equal/2, t_is_fixnum/1, t_is_float/1, t_is_float/2, @@ -182,13 +180,11 @@ t_remote/3, t_string/0, t_struct_from_opaque/2, - t_solve_remote/3, t_subst/2, t_subtract/2, t_subtract_list/2, t_sup/1, t_sup/2, - t_tid/0, t_timeout/0, t_to_string/1, t_to_string/2, @@ -250,6 +246,8 @@ %% -define(REC_TYPE_LIMIT, 2). +-define(EXPAND_DEPTH, 16). +-define(EXPAND_LIMIT, 10000). -define(TUPLE_TAG_LIMIT, 5). -define(TUPLE_ARITY_LIMIT, 8). @@ -368,7 +366,7 @@ -type record_key() :: {'record', atom()}. -type type_key() :: {'type' | 'opaque', atom(), arity()}. --type record_value() :: orddict:orddict(). % XXX. To be refined +-type record_value() :: [{atom(), erl_parse:abstract_expr(), erl_type()}]. -type type_value() :: {module(), erl_type(), atom()}. -type type_table() :: dict:dict(record_key(), record_value()) | dict:dict(type_key(), type_value()). @@ -466,16 +464,6 @@ has_opaque_subtype(T) -> t_opaque_structure(?opaque(Elements)) -> t_sup([Struct || #opaque{struct = Struct} <- ordsets:to_list(Elements)]). --spec t_opaque_modules(erl_type()) -> [module()]. - -t_opaque_modules(?opaque(Elements)) -> - case ordsets:size(Elements) of - 1 -> - [#opaque{mod = Mod}] = set_to_list(Elements), - [Mod]; - _ -> throw({error, "Unexpected multiple opaque types"}) - end. - -spec t_contains_opaque(erl_type()) -> boolean(). t_contains_opaque(Type) -> @@ -759,7 +747,7 @@ t_opaque_from_records(RecDict) -> end end, RecDict), OpaqueTypeDict = - dict:map(fun({opaque, Name, _Arity}, {Module, _Type, ArgNames}) -> + dict:map(fun({opaque, Name, _Arity}, {{Module, _Form, ArgNames}, _Type}) -> %% Args = args_to_types(ArgNames), %% List = lists:zip(ArgNames, Args), %% TmpVarDict = dict:from_list(List), @@ -801,11 +789,6 @@ t_struct_from_opaque(Type, _Opaques) -> Type. list_struct_from_opaque(Types, Opaques) -> [t_struct_from_opaque(Type, Opaques) || Type <- Types]. --spec module_builtin_opaques(module()) -> [erl_type()]. - -module_builtin_opaques(Module) -> - [O || O <- all_opaque_builtins(), lists:member(Module, t_opaque_modules(O))]. - %%----------------------------------------------------------------------------- %% Remote types: these types are used for preprocessing; %% they should never reach the analysis stage. @@ -825,134 +808,6 @@ is_remote(_) -> false. -type mod_records() :: dict:dict(module(), type_table()). --spec t_solve_remote(erl_type(), sets:set(mfa()), mod_records()) -> erl_type(). - -t_solve_remote(Type, ExpTypes, Records) -> - {RT, _RR} = t_solve_remote(Type, ExpTypes, Records, []), - RT. - -t_solve_remote(?function(Domain, Range), ET, R, C) -> - {RT1, RR1} = t_solve_remote(Domain, ET, R, C), - {RT2, RR2} = t_solve_remote(Range, ET, R, C), - {?function(RT1, RT2), RR1 ++ RR2}; -t_solve_remote(?list(Types, Term, Size), ET, R, C) -> - {RT1, RR1} = t_solve_remote(Types, ET, R, C), - {RT2, RR2} = t_solve_remote(Term, ET, R, C), - {?list(RT1, RT2, Size), RR1 ++ RR2}; -t_solve_remote(?product(Types), ET, R, C) -> - {RL, RR} = list_solve_remote(Types, ET, R, C), - {?product(RL), RR}; -t_solve_remote(?opaque(Set), ET, R, C) -> - List = ordsets:to_list(Set), - {NewList, RR} = opaques_solve_remote(List, ET, R, C), - {?opaque(ordsets:from_list(NewList)), RR}; -t_solve_remote(?tuple(?any, _, _) = T, _ET, _R, _C) -> {T, []}; -t_solve_remote(?tuple(Types, _Arity, _Tag), ET, R, C) -> - {RL, RR} = list_solve_remote(Types, ET, R, C), - {t_tuple(RL), RR}; -t_solve_remote(?tuple_set(Set), ET, R, C) -> - {NewTuples, RR} = tuples_solve_remote(Set, ET, R, C), - {t_sup(NewTuples), RR}; -t_solve_remote(?remote(Set), ET, R, C) -> - RemoteList = ordsets:to_list(Set), - {RL, RR} = list_solve_remote_type(RemoteList, ET, R, C), - {t_sup(RL), RR}; -t_solve_remote(?union(List), ET, R, C) -> - {RL, RR} = list_solve_remote(List, ET, R, C), - {t_sup(RL), RR}; -t_solve_remote(T, _ET, _R, _C) -> {T, []}. - -t_solve_remote_type(#remote{mod = RemMod, name = Name, args = Args0} = RemType, - ET, R, C) -> - Args = lists:map(fun(A) -> - {Arg, _} = t_solve_remote(A, ET, R, C), - Arg - end, Args0), - ArgsLen = length(Args), - case dict:find(RemMod, R) of - error -> - self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, - {t_any(), []}; - {ok, RemDict} -> - MFA = {RemMod, Name, ArgsLen}, - case sets:is_element(MFA, ET) of - true -> - case lookup_type(Name, ArgsLen, RemDict) of - {type, {_Mod, Type, ArgNames}} -> - {NewType, NewCycle, NewRR} = - case can_unfold_more(RemType, C) of - true -> - List = lists:zip(ArgNames, Args), - TmpVarDict = dict:from_list(List), - {t_from_form(Type, RemDict, TmpVarDict), [RemType|C], []}; - false -> - {t_any(), C, [RemType]} - end, - {RT, RR} = t_solve_remote(NewType, ET, R, NewCycle), - RetRR = NewRR ++ RR, - RT1 = - case lists:member(RemType, RetRR) of - true -> t_limit(RT, ?REC_TYPE_LIMIT); - false -> RT - end, - {RT1, RetRR}; - {opaque, {Mod, Type, ArgNames}} -> - List = lists:zip(ArgNames, Args), - TmpVarDict = dict:from_list(List), - {Rep, NewCycle, NewRR} = - case can_unfold_more(RemType, C) of - true -> - {t_from_form(Type, RemDict, TmpVarDict), [RemType|C], []}; - false -> - {t_any(), C, [RemType]} - end, - {NewRep, RR} = t_solve_remote(Rep, ET, R, NewCycle), - RetRR = NewRR ++ RR, - RT1 = - case lists:member(RemType, RetRR) of - true -> t_limit(NewRep, ?REC_TYPE_LIMIT); - false -> NewRep - end, - {skip_opaque_alias(RT1, Mod, Name, Args), RetRR}; - error -> - Msg = io_lib:format("Unable to find remote type ~w:~w()\n", - [RemMod, Name]), - throw({error, Msg}) - end; - false -> - self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, - {t_any(), []} - end - end. - -list_solve_remote([], _ET, _R, _C) -> - {[], []}; -list_solve_remote([Type|Types], ET, R, C) -> - {RT, RR1} = t_solve_remote(Type, ET, R, C), - {RL, RR2} = list_solve_remote(Types, ET, R, C), - {[RT|RL], RR1 ++ RR2}. - -list_solve_remote_type([], _ET, _R, _C) -> - {[], []}; -list_solve_remote_type([Type|Types], ET, R, C) -> - {RT, RR1} = t_solve_remote_type(Type, ET, R, C), - {RL, RR2} = list_solve_remote_type(Types, ET, R, C), - {[RT|RL], RR1 ++ RR2}. - -opaques_solve_remote([], _ET, _R, _C) -> - {[], []}; -opaques_solve_remote([#opaque{struct = Struct} = Remote|Tail], ET, R, C) -> - {RT, RR1} = t_solve_remote(Struct, ET, R, C), - {LOp, RR2} = opaques_solve_remote(Tail, ET, R, C), - {[Remote#opaque{struct = RT}|LOp], RR1 ++ RR2}. - -tuples_solve_remote([], _ET, _R, _C) -> - {[], []}; -tuples_solve_remote([{_Sz, Tuples}|Tail], ET, R, C) -> - {RL, RR1} = list_solve_remote(Tuples, ET, R, C), - {LSzTpls, RR2} = tuples_solve_remote(Tail, ET, R, C), - {RL ++ LSzTpls, RR1 ++ RR2}. - %%----------------------------------------------------------------------------- %% Unit type. Signals non termination. %% @@ -1891,17 +1746,6 @@ is_tuple1(_) -> false. t_bitstrlist() -> t_iolist(1, t_bitstr()). -%% XXX. To be removed. --spec t_constant() -> erl_type(). - -t_constant() -> - t_sup([t_number(), t_identifier(), t_atom(), t_fun(), t_binary()]). - --spec t_is_constant(erl_type()) -> boolean(). - -t_is_constant(X) -> - t_is_subtype(X, t_constant()). - -spec t_arity() -> erl_type(). t_arity() -> @@ -1987,82 +1831,6 @@ t_parameterized_module() -> t_timeout() -> t_sup(t_non_neg_integer(), t_atom('infinity')). -%%----------------------------------------------------------------------------- -%% Some built-in opaque types -%% - --spec t_array() -> erl_type(). - -t_array() -> - t_opaque(array, array, [t_any()], - t_tuple([t_atom('array'), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_any(), - t_any()])). - --spec t_dict() -> erl_type(). - -t_dict() -> - t_opaque(dict, dict, [t_any(), t_any()], - t_tuple([t_atom('dict'), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_non_neg_integer()]), - t_sup([t_atom('undefined'), t_tuple()]), - t_sup([t_atom('undefined'), t_tuple()])])). - --spec t_digraph() -> erl_type(). - -t_digraph() -> - t_opaque(digraph, digraph, [], - t_tuple([t_atom('digraph'), - t_sup(t_atom(), t_tid()), - t_sup(t_atom(), t_tid()), - t_sup(t_atom(), t_tid()), - t_boolean()])). - --spec t_gb_set() -> erl_type(). - -t_gb_set() -> - t_opaque(gb_sets, gb_set, [], - t_tuple([t_non_neg_integer(), t_sup(t_atom('nil'), t_tuple(3))])). - --spec t_gb_tree() -> erl_type(). - -t_gb_tree() -> - t_opaque(gb_trees, gb_tree, [], - t_tuple([t_non_neg_integer(), t_sup(t_atom('nil'), t_tuple(4))])). - --spec t_queue() -> erl_type(). - -t_queue() -> - t_opaque(queue, queue, [t_any()], t_tuple([t_list(), t_list()])). - --spec t_set() -> erl_type(). - -t_set() -> - t_opaque(sets, set, [t_any()], - t_tuple([t_atom('set'), t_non_neg_integer(), t_non_neg_integer(), - t_pos_integer(), t_non_neg_integer(), t_non_neg_integer(), - t_non_neg_integer(), - t_sup([t_atom('undefined'), t_tuple()]), - t_sup([t_atom('undefined'), t_tuple()])])). - --spec t_tid() -> erl_type(). - -t_tid() -> - t_opaque(ets, tid, [], t_integer()). - --spec all_opaque_builtins() -> [erl_type(),...]. - -all_opaque_builtins() -> - [t_array(), t_dict(), t_digraph(), t_gb_set(), - t_gb_tree(), t_queue(), t_set(), t_tid()]. - %%------------------------------------ %% ?none is allowed in products. A product of size 1 is not a product. @@ -2357,14 +2125,19 @@ expand_range_from_set(Range = ?int_range(From, To), Set) -> -spec t_sup([erl_type()]) -> erl_type(). -t_sup([?any|_]) -> - ?any; -t_sup([H1, H2|T]) -> - t_sup([t_sup(H1, H2)|T]); -t_sup([H]) -> - subst_all_vars_to_any(H); -t_sup([]) -> - ?none. +t_sup([]) -> ?none; +t_sup(Ts) -> + case lists:any(fun is_any/1, Ts) of + true -> ?any; + false -> + t_sup1(Ts, []) + end. + +t_sup1([H1, H2|T], L) -> + t_sup1(T, [t_sup(H1, H2)|L]); +t_sup1([T], []) -> subst_all_vars_to_any(T); +t_sup1(Ts, L) -> + t_sup1(Ts++L, []). -spec t_sup(erl_type(), erl_type()) -> erl_type(). @@ -2850,15 +2623,19 @@ inf_collect(_T1, [], _Opaques, OpL) -> combine(S, T1, T2) -> #opaque{mod = Mod1, name = Name1, args = Args1} = T1, #opaque{mod = Mod2, name = Name2, args = Args2} = T2, + Comb1 = comb(Mod1, Name1, Args1, S, T1), case is_same_type_name({Mod1, Name1, Args1}, {Mod2, Name2, Args2}) of - true -> [comb(Mod1, Name1, Args1, S, T1)]; - false -> [comb(Mod1, Name1, Args1, S, T1), comb(Mod2, Name2, Args2, S, T2)] + true -> Comb1; + false -> Comb1 ++ comb(Mod2, Name2, Args2, S, T2) end. comb(Mod, Name, Args, S, T) -> case is_same_name(Mod, Name, Args, S) of - true -> S; - false -> T#opaque{struct = S} + true -> + ?opaque(Set) = S, + Set; + false -> + [T#opaque{struct = S}] end. is_same_name(Mod1, Name1, Args1, @@ -3182,12 +2959,12 @@ t_subst_aux(T, _VarMap) -> subst_all_remote(Type0, Substitute) -> Map = fun(Type) -> - case erl_types:t_is_remote(Type) of + case t_is_remote(Type) of true -> Substitute; false -> Type end end, - erl_types:t_map(Map, Type0). + t_map(Map, Type0). %%----------------------------------------------------------------------------- %% Unification @@ -3317,8 +3094,8 @@ is_opaque_type2(#opaque{mod = Mod1, name = Name1, args = Args1}, Opaques) -> is_type_name(Mod, Name, Args1, Mod, Name, Args2) -> length(Args1) =:= length(Args2); -is_type_name(Mod1, Name1, Args1, Mod2, Name2, Args2) -> - is_same_type_name2(Mod1, Name1, Args1, Mod2, Name2, Args2). +is_type_name(_Mod1, _Name1, _Args1, _Mod2, _Name2, _Args2) -> + false. %% Two functions since t_unify is not symmetric. unify_tuple_set_and_tuple1(?tuple_set([{Arity, List}]), @@ -3869,7 +3646,7 @@ t_abstract_records(?tuple(Elements, Arity, ?atom(_) = Tag), RecDict) -> [TagAtom] = atom_vals(Tag), case lookup_record(TagAtom, Arity - 1, RecDict) of error -> t_tuple([t_abstract_records(E, RecDict) || E <- Elements]); - {ok, Fields} -> t_tuple([Tag|[T || {_Name, T} <- Fields]]) + {ok, Fields} -> t_tuple([Tag|[T || {_Name, _Abstr, T} <- Fields]]) end; t_abstract_records(?tuple(Elements, _Arity, _Tag), RecDict) -> t_tuple([t_abstract_records(E, RecDict) || E <- Elements]); @@ -4090,7 +3867,8 @@ record_to_string(Tag, [_|Fields], FieldNames, RecDict) -> FieldStrings = record_fields_to_string(Fields, FieldNames, RecDict, []), "#" ++ atom_to_string(Tag) ++ "{" ++ string:join(FieldStrings, ",") ++ "}". -record_fields_to_string([F|Fs], [{FName, _DefType}|FDefs], RecDict, Acc) -> +record_fields_to_string([F|Fs], [{FName, _Abstr, _DefType}|FDefs], + RecDict, Acc) -> NewAcc = case t_is_equal(F, t_any()) orelse t_is_any_atom('undefined', F) of true -> Acc; @@ -4116,7 +3894,7 @@ record_field_diffs_to_string(?tuple([_|Fs], Arity, Tag), RecDict) -> FieldDiffs = field_diffs(Fs, FieldNames, RecDict, []), string:join(FieldDiffs, " and "). -field_diffs([F|Fs], [{FName, DefType}|FDefs], RecDict, Acc) -> +field_diffs([F|Fs], [{FName, _Abstr, DefType}|FDefs], RecDict, Acc) -> %% Don't care about opaqueness for now. NewAcc = case not t_is_none(t_inf(F, DefType)) of @@ -4156,15 +3934,7 @@ opaque_name(Mod, Name, Extra) -> flat_format("~s(~s)", [S, Extra]). mod_name(Mod, Name) -> - case is_obsolete_opaque_builtin(Mod, Name) of - true -> flat_format("~w", [Name]); - false -> flat_format("~w:~w", [Mod, Name]) - end. - -is_obsolete_opaque_builtin(digraph, digraph) -> true; -is_obsolete_opaque_builtin(gb_sets, gb_set) -> true; -is_obsolete_opaque_builtin(gb_trees, gb_tree) -> true; -is_obsolete_opaque_builtin(_, _) -> false. + flat_format("~w:~w", [Mod, Name]). %%============================================================================= %% @@ -4172,370 +3942,476 @@ is_obsolete_opaque_builtin(_, _) -> false. %% %%============================================================================= --spec t_from_form(parse_form()) -> erl_type(). +-type type_names() :: [type_key() | record_key()]. + +-spec t_from_form(parse_form(), sets:set(mfa()), + module(), mod_records()) -> erl_type(). -t_from_form(Form) -> - t_from_form(Form, dict:new()). +t_from_form(Form, ExpTypes, Module, RecDict) -> + t_from_form(Form, ExpTypes, Module, RecDict, dict:new()). --spec t_from_form(parse_form(), type_table()) -> erl_type(). +-spec t_from_form(parse_form(), sets:set(mfa()), + module(), mod_records(), var_table()) -> erl_type(). -t_from_form(Form, RecDict) -> - t_from_form(Form, RecDict, dict:new()). +t_from_form(Form, ExpTypes, Module, RecDict, VarDict) -> + {T, _} = t_from_form1(Form, [], ExpTypes, Module, RecDict, VarDict), + T. --spec t_from_form(parse_form(), type_table(), var_table()) -> erl_type(). +%% Replace external types with with none(). +-spec t_from_form_without_remote(parse_form(), type_table()) -> erl_type(). -t_from_form(Form, RecDict, VarDict) -> - {T, _R} = t_from_form(Form, [], RecDict, VarDict), +t_from_form_without_remote(Form, TypeTable) -> + Module = mod, + RecDict = dict:from_list([{Module, TypeTable}]), + ExpTypes = replace_by_none, + {T, _} = t_from_form1(Form, [], ExpTypes, Module, RecDict, dict:new()), T. --type type_names() :: [type_key() | record_key()]. +%% REC_TYPE_LIMIT is used for limiting the depth of recursive types. +%% EXPAND_LIMIT is used for limiting the size of types by +%% limiting the number of elements of lists within one type form. +%% EXPAND_DEPTH is used in conjunction with EXPAND_LIMIT to make the +%% types balanced (unions will otherwise collapse to any()) by limiting +%% the depth the same way as t_limit/2 does. + +-type expand_limit() :: integer(). --spec t_from_form(parse_form(), type_names(), type_table(), var_table()) -> - {erl_type(), type_names()}. +-type expand_depth() :: integer(). -t_from_form({var, _L, '_'}, _TypeNames, _RecDict, _VarDict) -> - {t_any(), []}; -t_from_form({var, _L, Name}, _TypeNames, _RecDict, VarDict) -> - case dict:find(Name, VarDict) of - error -> {t_var(Name), []}; - {ok, Val} -> {Val, []} +t_from_form1(Form, TypeNames, ET, M, MR, V) -> + t_from_form1(Form, TypeNames, ET, M, MR, V, ?EXPAND_DEPTH). + +t_from_form1(Form, TypeNames, ET, M, MR, V, D) -> + L = ?EXPAND_LIMIT, + {T, L1} = t_from_form(Form, TypeNames, ET, M, MR, V, D, L), + if + L1 =< 0, D > 1 -> + D1 = D div 2, + t_from_form1(Form, TypeNames, ET, M, MR, V, D1); + true -> + {T, L1} + end. + +-spec t_from_form(parse_form(), type_names(), + sets:set(mfa()) | 'replace_by_none', + module(), mod_records(), var_table(), + expand_depth(), expand_limit()) + -> {erl_type(), expand_limit()}. + +%% If there is something wrong with parse_form() +%% throw({error, io_lib:chars()} is called; +%% for unknown remote types +%% self() ! {self(), ext_types, {RemMod, Name, ArgsLen}} +%% is called, unless 'replace_by_none' is given. +%% +%% It is assumed that M can be found in MR. + +t_from_form(_, _TypeNames, _ET, _M, _MR, _V, D, L) when D =< 0 ; L =< 0 -> + {t_any(), L}; +t_from_form({var, _L, '_'}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_any(), L}; +t_from_form({var, _L, Name}, _TypeNames, _ET, _M, _MR, V, _D, L) -> + case dict:find(Name, V) of + error -> {t_var(Name), L}; + {ok, Val} -> {Val, L} end; -t_from_form({ann_type, _L, [_Var, Type]}, TypeNames, RecDict, VarDict) -> - t_from_form(Type, TypeNames, RecDict, VarDict); -t_from_form({paren_type, _L, [Type]}, TypeNames, RecDict, VarDict) -> - t_from_form(Type, TypeNames, RecDict, VarDict); +t_from_form({ann_type, _L, [_Var, Type]}, TypeNames, ET, M, MR, V, D, L) -> + t_from_form(Type, TypeNames, ET, M, MR, V, D, L); +t_from_form({paren_type, _L, [Type]}, TypeNames, ET, M, MR, V, D, L) -> + t_from_form(Type, TypeNames, ET, M, MR, V, D, L); t_from_form({remote_type, _L, [{atom, _, Module}, {atom, _, Type}, Args]}, - TypeNames, RecDict, VarDict) -> - {L, R} = list_from_form(Args, TypeNames, RecDict, VarDict), - {t_remote(Module, Type, L), R}; -t_from_form({atom, _L, Atom}, _TypeNames, _RecDict, _VarDict) -> - {t_atom(Atom), []}; -t_from_form({integer, _L, Int}, _TypeNames, _RecDict, _VarDict) -> - {t_integer(Int), []}; -t_from_form({op, _L, _Op, _Arg} = Op, _TypeNames, _RecDict, _VarDict) -> + TypeNames, ET, M, MR, V, D, L) -> + remote_from_form(Module, Type, Args, TypeNames, ET, M, MR, V, D, L); +t_from_form({atom, _L, Atom}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_atom(Atom), L}; +t_from_form({integer, _L, Int}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_integer(Int), L}; +t_from_form({op, _L, _Op, _Arg} = Op, _TypeNames, _ET, _M, _MR, _V, _D, L) -> case erl_eval:partial_eval(Op) of {integer, _, Val} -> - {t_integer(Val), []}; + {t_integer(Val), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Op])}) end; t_from_form({op, _L, _Op, _Arg1, _Arg2} = Op, _TypeNames, - _RecDict, _VarDict) -> + _ET, _M, _MR, _V, _D, L) -> case erl_eval:partial_eval(Op) of {integer, _, Val} -> - {t_integer(Val), []}; + {t_integer(Val), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Op])}) end; -t_from_form({type, _L, any, []}, _TypeNames, _RecDict, _VarDict) -> - {t_any(), []}; -t_from_form({type, _L, arity, []}, _TypeNames, _RecDict, _VarDict) -> - {t_arity(), []}; -t_from_form({type, _L, array, []}, TypeNames, RecDict, VarDict) -> - builtin_type(array, t_array(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, atom, []}, _TypeNames, _RecDict, _VarDict) -> - {t_atom(), []}; -t_from_form({type, _L, binary, []}, _TypeNames, _RecDict, _VarDict) -> - {t_binary(), []}; +t_from_form({type, _L, any, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_any(), L}; +t_from_form({type, _L, arity, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_arity(), L}; +t_from_form({type, _L, atom, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_atom(), L}; +t_from_form({type, _L, binary, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_binary(), L}; t_from_form({type, _L, binary, [Base, Unit]} = Type, - _TypeNames, _RecDict, _VarDict) -> + _TypeNames, _ET, _M, _MR, _V, _D, L) -> case {erl_eval:partial_eval(Base), erl_eval:partial_eval(Unit)} of {{integer, _, B}, {integer, _, U}} when B >= 0, U >= 0 -> - {t_bitstr(U, B), []}; + {t_bitstr(U, B), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Type])}) end; -t_from_form({type, _L, bitstring, []}, _TypeNames, _RecDict, _VarDict) -> - {t_bitstr(), []}; -t_from_form({type, _L, bool, []}, _TypeNames, _RecDict, _VarDict) -> - {t_boolean(), []}; % XXX: Temporarily -t_from_form({type, _L, boolean, []}, _TypeNames, _RecDict, _VarDict) -> - {t_boolean(), []}; -t_from_form({type, _L, byte, []}, _TypeNames, _RecDict, _VarDict) -> - {t_byte(), []}; -t_from_form({type, _L, char, []}, _TypeNames, _RecDict, _VarDict) -> - {t_char(), []}; -t_from_form({type, _L, dict, []}, TypeNames, RecDict, VarDict) -> - builtin_type(dict, t_dict(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, digraph, []}, TypeNames, RecDict, VarDict) -> - builtin_type(digraph, t_digraph(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, float, []}, _TypeNames, _RecDict, _VarDict) -> - {t_float(), []}; -t_from_form({type, _L, function, []}, _TypeNames, _RecDict, _VarDict) -> - {t_fun(), []}; -t_from_form({type, _L, 'fun', []}, _TypeNames, _RecDict, _VarDict) -> - {t_fun(), []}; +t_from_form({type, _L, bitstring, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_bitstr(), L}; +t_from_form({type, _L, bool, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_boolean(), L}; % XXX: Temporarily +t_from_form({type, _L, boolean, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_boolean(), L}; +t_from_form({type, _L, byte, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_byte(), L}; +t_from_form({type, _L, char, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_char(), L}; +t_from_form({type, _L, float, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_float(), L}; +t_from_form({type, _L, function, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_fun(), L}; +t_from_form({type, _L, 'fun', []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_fun(), L}; t_from_form({type, _L, 'fun', [{type, _, any}, Range]}, TypeNames, - RecDict, VarDict) -> - {T, R} = t_from_form(Range, TypeNames, RecDict, VarDict), - {t_fun(T), R}; + ET, M, MR, V, D, L) -> + {T, L1} = t_from_form(Range, TypeNames, ET, M, MR, V, D - 1, L - 1), + {t_fun(T), L1}; t_from_form({type, _L, 'fun', [{type, _, product, Domain}, Range]}, - TypeNames, RecDict, VarDict) -> - {L, R1} = list_from_form(Domain, TypeNames, RecDict, VarDict), - {T, R2} = t_from_form(Range, TypeNames, RecDict, VarDict), - {t_fun(L, T), R1 ++ R2}; -t_from_form({type, _L, gb_set, []}, TypeNames, RecDict, VarDict) -> - builtin_type(gb_set, t_gb_set(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, gb_tree, []}, TypeNames, RecDict, VarDict) -> - builtin_type(gb_tree, t_gb_tree(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, identifier, []}, _TypeNames, _RecDict, _VarDict) -> - {t_identifier(), []}; -t_from_form({type, _L, integer, []}, _TypeNames, _RecDict, _VarDict) -> - {t_integer(), []}; -t_from_form({type, _L, iodata, []}, _TypeNames, _RecDict, _VarDict) -> - {t_iodata(), []}; -t_from_form({type, _L, iolist, []}, _TypeNames, _RecDict, _VarDict) -> - {t_iolist(), []}; -t_from_form({type, _L, list, []}, _TypeNames, _RecDict, _VarDict) -> - {t_list(), []}; -t_from_form({type, _L, list, [Type]}, TypeNames, RecDict, VarDict) -> - {T, R} = t_from_form(Type, TypeNames, RecDict, VarDict), - {t_list(T), R}; -t_from_form({type, _L, map, _}, TypeNames, RecDict, VarDict) -> - builtin_type(map, t_map([]), TypeNames, RecDict, VarDict); -t_from_form({type, _L, mfa, []}, _TypeNames, _RecDict, _VarDict) -> - {t_mfa(), []}; -t_from_form({type, _L, module, []}, _TypeNames, _RecDict, _VarDict) -> - {t_module(), []}; -t_from_form({type, _L, nil, []}, _TypeNames, _RecDict, _VarDict) -> - {t_nil(), []}; -t_from_form({type, _L, neg_integer, []}, _TypeNames, _RecDict, _VarDict) -> - {t_neg_integer(), []}; -t_from_form({type, _L, non_neg_integer, []}, _TypeNames, _RecDict, - _VarDict) -> - {t_non_neg_integer(), []}; -t_from_form({type, _L, no_return, []}, _TypeNames, _RecDict, _VarDict) -> - {t_unit(), []}; -t_from_form({type, _L, node, []}, _TypeNames, _RecDict, _VarDict) -> - {t_node(), []}; -t_from_form({type, _L, none, []}, _TypeNames, _RecDict, _VarDict) -> - {t_none(), []}; -t_from_form({type, _L, nonempty_list, []}, _TypeNames, _RecDict, _VarDict) -> - {t_nonempty_list(), []}; -t_from_form({type, _L, nonempty_list, [Type]}, TypeNames, RecDict, VarDict) -> - {T, R} = t_from_form(Type, TypeNames, RecDict, VarDict), - {t_nonempty_list(T), R}; + TypeNames, ET, M, MR, V, D, L) -> + {Dom1, L1} = list_from_form(Domain, TypeNames, ET, M, MR, V, D, L), + {Ran1, L2} = t_from_form(Range, TypeNames, ET, M, MR, V, D - 1, L1), + {t_fun(Dom1, Ran1), L2}; +t_from_form({type, _L, identifier, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_identifier(), L}; +t_from_form({type, _L, integer, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_integer(), L}; +t_from_form({type, _L, iodata, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_iodata(), L}; +t_from_form({type, _L, iolist, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_iolist(), L}; +t_from_form({type, _L, list, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_list(), L}; +t_from_form({type, _L, list, [Type]}, TypeNames, ET, M, MR, V, D, L) -> + {T, L1} = t_from_form(Type, TypeNames, ET, M, MR, V, D - 1, L - 1), + {t_list(T), L1}; +t_from_form({type, _L, map, _}, TypeNames, ET, M, MR, V, D, L) -> + builtin_type(map, t_map([]), TypeNames, ET, M, MR, V, D, L); +t_from_form({type, _L, mfa, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_mfa(), L}; +t_from_form({type, _L, module, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_module(), L}; +t_from_form({type, _L, nil, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_nil(), L}; +t_from_form({type, _L, neg_integer, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_neg_integer(), L}; +t_from_form({type, _L, non_neg_integer, []}, _TypeNames, _ET, _M, _MR, + _V, _D, L) -> + {t_non_neg_integer(), L}; +t_from_form({type, _L, no_return, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_unit(), L}; +t_from_form({type, _L, node, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_node(), L}; +t_from_form({type, _L, none, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_none(), L}; +t_from_form({type, _L, nonempty_list, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_nonempty_list(), L}; +t_from_form({type, _L, nonempty_list, [Type]}, TypeNames, ET, M, MR, V, D, L) -> + {T, L1} = t_from_form(Type, TypeNames, ET, M, MR, V, D, L - 1), + {t_nonempty_list(T), L1}; t_from_form({type, _L, nonempty_improper_list, [Cont, Term]}, TypeNames, - RecDict, VarDict) -> - {T1, R1} = t_from_form(Cont, TypeNames, RecDict, VarDict), - {T2, R2} = t_from_form(Term, TypeNames, RecDict, VarDict), - {t_cons(T1, T2), R1 ++ R2}; + ET, M, MR, V, D, L) -> + {T1, L1} = t_from_form(Cont, TypeNames, ET, M, MR, V, D, L - 1), + {T2, L2} = t_from_form(Term, TypeNames, ET, M, MR, V, D, L1), + {t_cons(T1, T2), L2}; t_from_form({type, _L, nonempty_maybe_improper_list, []}, _TypeNames, - _RecDict, _VarDict) -> - {t_cons(?any, ?any), []}; + _ET, _M, _MR, _V, _D, L) -> + {t_cons(?any, ?any), L}; t_from_form({type, _L, nonempty_maybe_improper_list, [Cont, Term]}, - TypeNames, RecDict, VarDict) -> - {T1, R1} = t_from_form(Cont, TypeNames, RecDict, VarDict), - {T2, R2} = t_from_form(Term, TypeNames, RecDict, VarDict), - {t_cons(T1, T2), R1 ++ R2}; -t_from_form({type, _L, nonempty_string, []}, _TypeNames, _RecDict, - _VarDict) -> - {t_nonempty_string(), []}; -t_from_form({type, _L, number, []}, _TypeNames, _RecDict, _VarDict) -> - {t_number(), []}; -t_from_form({type, _L, pid, []}, _TypeNames, _RecDict, _VarDict) -> - {t_pid(), []}; -t_from_form({type, _L, port, []}, _TypeNames, _RecDict, _VarDict) -> - {t_port(), []}; -t_from_form({type, _L, pos_integer, []}, _TypeNames, _RecDict, _VarDict) -> - {t_pos_integer(), []}; + TypeNames, ET, M, MR, V, D, L) -> + {T1, L1} = t_from_form(Cont, TypeNames, ET, M, MR, V, D, L - 1), + {T2, L2} = t_from_form(Term, TypeNames, ET, M, MR, V, D, L1), + {t_cons(T1, T2), L2}; +t_from_form({type, _L, nonempty_string, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_nonempty_string(), L}; +t_from_form({type, _L, number, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_number(), L}; +t_from_form({type, _L, pid, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_pid(), L}; +t_from_form({type, _L, port, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_port(), L}; +t_from_form({type, _L, pos_integer, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_pos_integer(), L}; t_from_form({type, _L, maybe_improper_list, []}, _TypeNames, - _RecDict, _VarDict) -> - {t_maybe_improper_list(), []}; + _ET, _M, _MR, _V, _D, L) -> + {t_maybe_improper_list(), L}; t_from_form({type, _L, maybe_improper_list, [Content, Termination]}, - TypeNames, RecDict, VarDict) -> - {T1, R1} = t_from_form(Content, TypeNames, RecDict, VarDict), - {T2, R2} = t_from_form(Termination, TypeNames, RecDict, VarDict), - {t_maybe_improper_list(T1, T2), R1 ++ R2}; -t_from_form({type, _L, product, Elements}, TypeNames, RecDict, VarDict) -> - {L, R} = list_from_form(Elements, TypeNames, RecDict, VarDict), - {t_product(L), R}; -t_from_form({type, _L, queue, []}, TypeNames, RecDict, VarDict) -> - builtin_type(queue, t_queue(), TypeNames, RecDict, VarDict); + TypeNames, ET, M, MR, V, D, L) -> + {T1, L1} = t_from_form(Content, TypeNames, ET, M, MR, V, D, L - 1), + {T2, L2} = t_from_form(Termination, TypeNames, ET, M, MR, V, D, L1), + {t_maybe_improper_list(T1, T2), L2}; +t_from_form({type, _L, product, Elements}, TypeNames, ET, M, MR, V, D, L) -> + {Lst, L1} = list_from_form(Elements, TypeNames, ET, M, MR, V, D - 1, L), + {t_product(Lst), L1}; t_from_form({type, _L, range, [From, To]} = Type, - _TypeNames, _RecDict, _VarDict) -> + _TypeNames, _ET, _M, _MR, _V, _D, L) -> case {erl_eval:partial_eval(From), erl_eval:partial_eval(To)} of {{integer, _, FromVal}, {integer, _, ToVal}} -> - {t_from_range(FromVal, ToVal), []}; + {t_from_range(FromVal, ToVal), L}; _ -> throw({error, io_lib:format("Unable to evaluate type ~w\n", [Type])}) end; -t_from_form({type, _L, record, [Name|Fields]}, TypeNames, RecDict, VarDict) -> - record_from_form(Name, Fields, TypeNames, RecDict, VarDict); -t_from_form({type, _L, reference, []}, _TypeNames, _RecDict, _VarDict) -> - {t_reference(), []}; -t_from_form({type, _L, set, []}, TypeNames, RecDict, VarDict) -> - builtin_type(set, t_set(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, string, []}, _TypeNames, _RecDict, _VarDict) -> - {t_string(), []}; -t_from_form({type, _L, term, []}, _TypeNames, _RecDict, _VarDict) -> - {t_any(), []}; -t_from_form({type, _L, tid, []}, TypeNames, RecDict, VarDict) -> - builtin_type(tid, t_tid(), TypeNames, RecDict, VarDict); -t_from_form({type, _L, timeout, []}, _TypeNames, _RecDict, _VarDict) -> - {t_timeout(), []}; -t_from_form({type, _L, tuple, any}, _TypeNames, _RecDict, _VarDict) -> - {t_tuple(), []}; -t_from_form({type, _L, tuple, Args}, TypeNames, RecDict, VarDict) -> - {L, R} = list_from_form(Args, TypeNames, RecDict, VarDict), - {t_tuple(L), R}; -t_from_form({type, _L, union, Args}, TypeNames, RecDict, VarDict) -> - {L, R} = list_from_form(Args, TypeNames, RecDict, VarDict), - {t_sup(L), R}; -t_from_form({type, _L, Name, Args}, TypeNames, RecDict, VarDict) -> - type_from_form(Name, Args, TypeNames, RecDict, VarDict); +t_from_form({type, _L, record, [Name|Fields]}, TypeNames, ET, M, MR, V, D, L) -> + record_from_form(Name, Fields, TypeNames, ET, M, MR, V, D, L); +t_from_form({type, _L, reference, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_reference(), L}; +t_from_form({type, _L, string, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_string(), L}; +t_from_form({type, _L, term, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_any(), L}; +t_from_form({type, _L, timeout, []}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_timeout(), L}; +t_from_form({type, _L, tuple, any}, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {t_tuple(), L}; +t_from_form({type, _L, tuple, Args}, TypeNames, ET, M, MR, V, D, L) -> + {Lst, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D - 1, L), + {t_tuple(Lst), L1}; +t_from_form({type, _L, union, Args}, TypeNames, ET, M, MR, V, D, L) -> + {Lst, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D, L), + {t_sup(Lst), L1}; +t_from_form({user_type, _L, Name, Args}, TypeNames, ET, M, MR, V, D, L) -> + type_from_form(Name, Args, TypeNames, ET, M, MR, V, D, L); +t_from_form({type, _L, Name, Args}, TypeNames, ET, M, MR, V, D, L) -> + %% Compatibility: modules compiled before Erlang/OTP 18.0. + type_from_form(Name, Args, TypeNames, ET, M, MR, V, D, L); t_from_form({opaque, _L, Name, {Mod, Args, Rep}}, _TypeNames, - _RecDict, _VarDict) -> - {t_opaque(Mod, Name, Args, Rep), []}. - -builtin_type(Name, Type, TypeNames, RecDict, VarDict) -> - case lookup_type(Name, 0, RecDict) of - {_, {_M, _T, _A}} -> - type_from_form(Name, [], TypeNames, RecDict, VarDict); + _ET, _M, _MR, _V, _D, L) -> + %% XXX. To be removed. + {t_opaque(Mod, Name, Args, Rep), L}. + +builtin_type(Name, Type, TypeNames, ET, M, MR, V, D, L) -> + case dict:find(M, MR) of + {ok, R} -> + case lookup_type(Name, 0, R) of + {_, {{_M, _F, _A}, _T}} -> + type_from_form(Name, [], TypeNames, ET, M, MR, V, D, L); + error -> + {Type, L} + end; error -> - {Type, []} + {Type, L} end. -type_from_form(Name, Args, TypeNames, RecDict, VarDict) -> +type_from_form(Name, Args, TypeNames, ET, M, MR, V, D, L) -> ArgsLen = length(Args), - ArgTypes = forms_to_types(Args, TypeNames, RecDict, VarDict), - case lookup_type(Name, ArgsLen, RecDict) of - {type, {_Module, Type, ArgNames}} -> - TypeName = {type, Name, ArgsLen}, + {ArgTypes, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D, L), + {ok, R} = dict:find(M, MR), + case lookup_type(Name, ArgsLen, R) of + {type, {{Module, Form, ArgNames}, _Type}} -> + TypeName = {type, Module, Name, ArgsLen}, case can_unfold_more(TypeName, TypeNames) of true -> List = lists:zip(ArgNames, ArgTypes), - TmpVarDict = dict:from_list(List), - {T, R} = t_from_form(Type, [TypeName|TypeNames], - RecDict, TmpVarDict), - case lists:member(TypeName, R) of - true -> {t_limit(T, ?REC_TYPE_LIMIT), R}; - false -> {T, R} - end; - false -> {t_any(), [TypeName]} + TmpV = dict:from_list(List), + t_from_form(Form, [TypeName|TypeNames], ET, M, MR, TmpV, D, L1); + false -> + {t_any(), L1} end; - {opaque, {Module, Type, ArgNames}} -> - TypeName = {opaque, Name, ArgsLen}, - {Rep, Rret} = + {opaque, {{Module, Form, ArgNames}, Type}} -> + TypeName = {opaque, Module, Name, ArgsLen}, + {Rep, L2} = case can_unfold_more(TypeName, TypeNames) of true -> List = lists:zip(ArgNames, ArgTypes), - TmpVarDict = dict:from_list(List), - {T, R} = t_from_form(Type, [TypeName|TypeNames], - RecDict, TmpVarDict), - case lists:member(TypeName, R) of - true -> {t_limit(T, ?REC_TYPE_LIMIT), R}; - false -> {T, R} - end; - false -> {t_any(), [TypeName]} + TmpV = dict:from_list(List), + t_from_form(Form, [TypeName|TypeNames], ET, M, MR, TmpV, D, L1); + false -> {t_any(), L1} end, + Rep1 = choose_opaque_type(Rep, Type), Args2 = [subst_all_vars_to_any(ArgType) || ArgType <- ArgTypes], - {skip_opaque_alias(Rep, Module, Name, Args2), Rret}; + {skip_opaque_alias(Rep1, Module, Name, Args2), L2}; error -> Msg = io_lib:format("Unable to find type ~w/~w\n", [Name, ArgsLen]), throw({error, Msg}) end. -forms_to_types(Forms, TypeNames, RecDict, VarDict) -> - {Types, _} = list_from_form(Forms, TypeNames, RecDict, VarDict), - Types. - skip_opaque_alias(?opaque(_) = T, _Mod, _Name, _Args) -> T; skip_opaque_alias(T, Module, Name, Args) -> t_opaque(Module, Name, Args, T). -record_from_form({atom, _, Name}, ModFields, TypeNames, RecDict, VarDict) -> +remote_from_form(RemMod, Name, Args, TypeNames, ET, M, MR, V, D, L) -> + {ArgTypes, L1} = list_from_form(Args, TypeNames, ET, M, MR, V, D, L), + if + ET =:= replace_by_none -> + {t_none(), L1}; + true -> + ArgsLen = length(Args), + case dict:find(RemMod, MR) of + error -> + self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, + {t_any(), L1}; + {ok, RemDict} -> + MFA = {RemMod, Name, ArgsLen}, + case sets:is_element(MFA, ET) of + true -> + case lookup_type(Name, ArgsLen, RemDict) of + {type, {{_Mod, Form, ArgNames}, _Type}} -> + RemType = {type, RemMod, Name, ArgsLen}, + case can_unfold_more(RemType, TypeNames) of + true -> + List = lists:zip(ArgNames, ArgTypes), + TmpVarDict = dict:from_list(List), + NewTypeNames = [RemType|TypeNames], + t_from_form(Form, NewTypeNames, ET, + RemMod, MR, TmpVarDict, D, L1); + false -> + {t_any(), L1} + end; + {opaque, {{Mod, Form, ArgNames}, Type}} -> + RemType = {opaque, RemMod, Name, ArgsLen}, + List = lists:zip(ArgNames, ArgTypes), + TmpVarDict = dict:from_list(List), + {NewRep, L2} = + case can_unfold_more(RemType, TypeNames) of + true -> + NewTypeNames = [RemType|TypeNames], + t_from_form(Form, NewTypeNames, ET, RemMod, MR, + TmpVarDict, D, L1); + false -> + {t_any(), L1} + end, + NewRep1 = choose_opaque_type(NewRep, Type), + {skip_opaque_alias(NewRep1, Mod, Name, ArgTypes), L2}; + error -> + Msg = io_lib:format("Unable to find remote type ~w:~w()\n", + [RemMod, Name]), + throw({error, Msg}) + end; + false -> + self() ! {self(), ext_types, {RemMod, Name, ArgsLen}}, + {t_any(), L1} + end + end + end. + +%% Opaque types (both local and remote) are problematic when it comes +%% to the limits (TypeNames, D, and L). The reason is that if any() is +%% substituted for a more specialized subtype of an opaque type, the +%% property stated along with decorate_with_opaque() (the type has to +%% be a subtype of the declared type) no longer holds. +%% +%% The less than perfect remedy: if the opaque type created from a +%% form is not a subset of the declared type, the declared type is +%% used instead, effectively bypassing the limits, and potentially +%% resulting in huge types. +choose_opaque_type(Type, DeclType) -> + case + t_is_subtype(subst_all_vars_to_any(Type), + subst_all_vars_to_any(DeclType)) + of + true -> Type; + false -> DeclType + end. + +record_from_form({atom, _, Name}, ModFields, TypeNames, ET, M, MR, V, D, L) -> case can_unfold_more({record, Name}, TypeNames) of true -> - case lookup_record(Name, RecDict) of + {ok, R} = dict:find(M, MR), + case lookup_record(Name, R) of {ok, DeclFields} -> - TypeNames1 = [{record, Name}|TypeNames], - AreTyped = [is_erl_type(FieldType) - || {_FieldName, FieldType} <- DeclFields], - {DeclFields1, R1} = - case lists:all(fun(Elem) -> Elem end, AreTyped) of - true -> {DeclFields, []}; - false -> fields_from_form(DeclFields, TypeNames1, - RecDict, dict:new()) - end, - {GetModRec, R2} = get_mod_record(ModFields, DeclFields1, - TypeNames1, - RecDict, VarDict), + NewTypeNames = [{record, Name}|TypeNames], + {GetModRec, L1} = get_mod_record(ModFields, DeclFields, + NewTypeNames, ET, M, MR, V, D, L), case GetModRec of {error, FieldName} -> throw({error, io_lib:format("Illegal declaration of #~w{~w}\n", [Name, FieldName])}); {ok, NewFields} -> - {t_tuple( - [t_atom(Name)|[Type || {_FieldName, Type} <- NewFields]]), - R1 ++ R2} + {NewFields1, L2} = + fields_from_form(NewFields, NewTypeNames, ET, M, MR, + dict:new(), D, L1), + Rec = t_tuple( + [t_atom(Name)|[Type + || {_FieldName, Type} <- NewFields1]]), + {Rec, L2} end; error -> throw({error, io_lib:format("Unknown record #~w{}\n", [Name])}) end; - false -> {t_any(), []} + false -> + {t_any(), L} end. -get_mod_record([], DeclFields, _TypeNames, _RecDict, _VarDict) -> - {{ok, DeclFields}, []}; -get_mod_record(ModFields, DeclFields, TypeNames, RecDict, VarDict) -> - DeclFieldsDict = orddict:from_list(DeclFields), - {ModFieldsDict, R} = build_field_dict(ModFields, TypeNames, - RecDict, VarDict), - case get_mod_record(DeclFieldsDict, ModFieldsDict, []) of - {error, _FieldName} = Error -> {Error, R}; - {ok, FinalOrdDict} -> - {{ok, [{FieldName, orddict:fetch(FieldName, FinalOrdDict)} - || {FieldName, _} <- DeclFields]}, - R} +get_mod_record([], DeclFields, _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {{ok, DeclFields}, L}; +get_mod_record(ModFields, DeclFields, TypeNames, ET, M, MR, V, D, L) -> + DeclFieldsDict = lists:keysort(1, DeclFields), + {ModFieldsDict, L1} = + build_field_dict(ModFields, TypeNames, ET, M, MR, V, D, L), + case get_mod_record_types(DeclFieldsDict, ModFieldsDict, []) of + {error, _FieldName} = Error -> {Error, L1}; + {ok, FinalKeyDict} -> + Fields = [lists:keyfind(FieldName, 1, FinalKeyDict) + || {FieldName, _, _} <- DeclFields], + {{ok, Fields}, L1} end. -build_field_dict(FieldTypes, TypeNames, RecDict, VarDict) -> - build_field_dict(FieldTypes, TypeNames, RecDict, VarDict, []). - -build_field_dict([{type, _, field_type, [{atom, _, Name}, Type]}|Left], - TypeNames, RecDict, VarDict, Acc) -> - {T, R1} = t_from_form(Type, TypeNames, RecDict, VarDict), - NewAcc = [{Name, T}|Acc], - {D, R2} = build_field_dict(Left, TypeNames, RecDict, VarDict, NewAcc), - {D, R1 ++ R2}; -build_field_dict([], _TypeNames, _RecDict, _VarDict, Acc) -> - {orddict:from_list(Acc), []}. - -get_mod_record([{FieldName, DeclType}|Left1], - [{FieldName, ModType}|Left2], Acc) -> - ModTypeNoVars = subst_all_vars_to_any(ModType), - case - contains_remote(ModTypeNoVars) - orelse contains_remote(DeclType) - orelse t_is_subtype(ModTypeNoVars, DeclType) - of +build_field_dict(FieldTypes, TypeNames, ET, M, MR, V, D, L) -> + build_field_dict(FieldTypes, TypeNames, ET, M, MR, V, D, L, []). + +build_field_dict([{type, _, field_type, [{atom, _, Name}, Type]}|Left], + TypeNames, ET, M, MR, V, D, L, Acc) -> + {T, L1} = t_from_form(Type, TypeNames, ET, M, MR, V, D, L - 1), + %% The cached record field type (DeclType) in + %% get_mod_record_types()), was created with a similar call as TT. + %% Using T for the subtype test does not work since any() is not + %% always a subset of the field type. + TT = t_from_form(Type, ET, M, MR, V), + NewAcc = [{Name, Type, T, TT}|Acc], + {Dict, L2} = + build_field_dict(Left, TypeNames, ET, M, MR, V, D, L1, NewAcc), + {Dict, L2}; +build_field_dict([], _TypeNames, _ET, _M, _MR, _V, _D, L, Acc) -> + {lists:keysort(1, Acc), L}. + +get_mod_record_types([{FieldName, _Abstr, DeclType}|Left1], + [{FieldName, TypeForm, ModType, ModTypeTest}|Left2], + Acc) -> + ModTypeNoVars = subst_all_vars_to_any(ModTypeTest), + case t_is_subtype(ModTypeNoVars, DeclType) of false -> {error, FieldName}; - true -> get_mod_record(Left1, Left2, [{FieldName, ModType}|Acc]) + true -> get_mod_record_types(Left1, Left2, + [{FieldName, TypeForm, ModType}|Acc]) end; -get_mod_record([{FieldName1, _DeclType} = DT|Left1], - [{FieldName2, _ModType}|_] = List2, - Acc) when FieldName1 < FieldName2 -> - get_mod_record(Left1, List2, [DT|Acc]); -get_mod_record(DeclFields, [], Acc) -> - {ok, orddict:from_list(Acc ++ DeclFields)}; -get_mod_record(_, [{FieldName2, _ModType}|_], _Acc) -> +get_mod_record_types([{FieldName1, _Abstr, _DeclType} = DT|Left1], + [{FieldName2, _FormType, _ModType, _TT}|_] = List2, + Acc) when FieldName1 < FieldName2 -> + get_mod_record_types(Left1, List2, [DT|Acc]); +get_mod_record_types(Left1, [], Acc) -> + {ok, lists:keysort(1, Left1++Acc)}; +get_mod_record_types(_, [{FieldName2, _FormType, _ModType, _TT}|_], _Acc) -> {error, FieldName2}. -contains_remote(Type) -> - TypeNoRemote = subst_all_remote(Type, t_none()), - not t_is_equal(Type, TypeNoRemote). - -fields_from_form([], _TypeNames, _RecDict, _VarDict) -> - {[], []}; -fields_from_form([{Name, Type}|Tail], TypeNames, RecDict, - VarDict) -> - {T, R1} = t_from_form(Type, TypeNames, RecDict, VarDict), - {F, R2} = fields_from_form(Tail, TypeNames, RecDict, VarDict), - {[{Name, T}|F], R1 ++ R2}. - -list_from_form([], _TypeNames, _RecDict, _VarDict) -> - {[], []}; -list_from_form([H|Tail], TypeNames, RecDict, VarDict) -> - {T, R1} = t_from_form(H, TypeNames, RecDict, VarDict), - {L, R2} = list_from_form(Tail, TypeNames, RecDict, VarDict), - {[T|L], R1 ++ R2}. +%% It is important to create a limited version of the record type +%% since nested record types can otherwise easily result in huge +%% terms. +fields_from_form([], _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {[], L}; +fields_from_form([{Name, Abstr, _Type}|Tail], TypeNames, ET, M, MR, + V, D, L) -> + {T, L1} = t_from_form(Abstr, TypeNames, ET, M, MR, V, D, L), + {F, L2} = fields_from_form(Tail, TypeNames, ET, M, MR, V, D, L1), + {[{Name, T}|F], L2}. + +list_from_form([], _TypeNames, _ET, _M, _MR, _V, _D, L) -> + {[], L}; +list_from_form([H|Tail], TypeNames, ET, M, MR, V, D, L) -> + {H1, L1} = t_from_form(H, TypeNames, ET, M, MR, V, D, L - 1), + {T1, L2} = list_from_form(Tail, TypeNames, ET, M, MR, V, D, L1), + {[H1|T1], L2}. + +-spec t_var_names([erl_type()]) -> [atom()]. + +t_var_names([{var, _, Name}|L]) when L =/= '_' -> + [Name|t_var_names(L)]; +t_var_names([]) -> + []. -spec t_form_to_string(parse_form()) -> string(). @@ -4619,12 +4495,21 @@ t_form_to_string({type, _L, tuple, Args}) -> t_form_to_string({type, _L, union, Args}) -> string:join(t_form_to_string_list(Args), " | "); t_form_to_string({type, _L, Name, []} = T) -> - try t_to_string(t_from_form(T)) + try + M = mod, + D0 = dict:new(), + MR = dict:from_list([{M, D0}]), + {T1, _} = + t_from_form(T, [], sets:new(), M, MR, D0, _Deep=1000, _ALot=100000), + t_to_string(T1) catch throw:{error, _} -> atom_to_string(Name) ++ "()" end; -t_form_to_string({type, _L, Name, List}) -> +t_form_to_string({user_type, _L, Name, List}) -> flat_format("~w(~s)", - [Name, string:join(t_form_to_string_list(List), ",")]). + [Name, string:join(t_form_to_string_list(List), ",")]); +t_form_to_string({type, L, Name, List}) -> + %% Compatibility: modules compiled before Erlang/OTP 18.0. + t_form_to_string({user_type, L, Name, List}). t_form_to_string_list(List) -> t_form_to_string_list(List, []). @@ -4667,7 +4552,7 @@ is_erl_type(#c{}) -> true; is_erl_type(_) -> false. -spec lookup_record(atom(), type_table()) -> - 'error' | {'ok', [{atom(), parse_form() | erl_type()}]}. + 'error' | {'ok', [{atom(), parse_form(), erl_type()}]}. lookup_record(Tag, RecDict) when is_atom(Tag) -> case dict:find({record, Tag}, RecDict) of @@ -4682,7 +4567,7 @@ lookup_record(Tag, RecDict) when is_atom(Tag) -> end. -spec lookup_record(atom(), arity(), type_table()) -> - 'error' | {'ok', [{atom(), erl_type()}]}. + 'error' | {'ok', [{atom(), parse_form(), erl_type()}]}. lookup_record(Tag, Arity, RecDict) when is_atom(Tag) -> case dict:find({record, Tag}, RecDict) of @@ -4737,27 +4622,14 @@ do_opaque(Type, _Opaques, Pred) -> is_same_type_name(ModNameArgs, ModNameArgs) -> true; is_same_type_name({Mod, Name, Args1}, {Mod, Name, Args2}) -> all_any(Args1) orelse all_any(Args2); -is_same_type_name({Mod1, Name1, Args1}, {Mod2, Name2, Args2}) -> - is_same_type_name2(Mod1, Name1, Args1, Mod2, Name2, Args2). +is_same_type_name(_ModNameArgs1, _ModNameArgs2) -> + false. all_any([]) -> true; all_any([T|L]) -> t_is_any(T) andalso all_any(L); all_any(_) -> false. -%% Compatibility. In Erlang/OTP 17 the pre-defined opaque types -%% digraph() and so on can be used, but there are also new types such -%% as digraph:graph() with the exact same meaning. In Erlang/OTP R18.0 -%% all but the last clause can be removed. - -is_same_type_name2(digraph, digraph, [], digraph, graph, []) -> true; -is_same_type_name2(digraph, graph, [], digraph, digraph, []) -> true; -is_same_type_name2(gb_sets, gb_set, [], gb_sets, set, [_]) -> true; -is_same_type_name2(gb_sets, set, [_], gb_sets, gb_set, []) -> true; -is_same_type_name2(gb_trees, gb_tree, [], gb_trees, tree, [_, _]) -> true; -is_same_type_name2(gb_trees, tree, [_, _], gb_trees, gb_tree, []) -> true; -is_same_type_name2(_, _, _, _, _, _) -> false. - map_keys(?map(Pairs)) -> [K || {K, _} <- Pairs]. |